Improvement in machines for separating the fibers of wood for paper-stock



, P. e e. e. ROSE. Machine for Separating the Fibers of Wood for Paper,

Stock.

No. 2072553. Patented Aug. 27 1878.

imE-llmliml ii m UNITED STATES PATENT QFFICE.

PELEG ROSE AND GEORGE C. ROSE, OF NORWVICH, CONNECTICUT.

IMPROVEMENT IN MACHINES FOR SEPARATING THE FIBERS 0F WOOD FORPAPER-STOCK.

Specification forming part of Letters Patent No. 207,553, dated August27, 1878; application filed April 19, 1878.

To all whom it may concern:

Be it known that we, PELEG Host: and GEORGE O. Rosn, both of Norwich, inthe county of New London and State of Connecticut, have invented certainnew and useful Improvements in Machines for Separating the Fibers ofWood; and we do hereby declare that the following is a full, clear, andexact description thereof,'which will enable others skilled in the artto which it appertains to make and use the same, reference being had tothe accompanying drawings, which form a part of this specification, andin which Figure 1 is a perspective View, and Fig. 2 is a longitudinalvertical section.

Similar letters of reference denote correspondin g parts in bothfigures.

This invention relates to that class of machines constructed for thepurpose of preparing from wood a fibrous pulp to be used in themanufacture of paper; and it consists in the construction andarrangement of a scraper for separating the fibers of the wood, as weshall now proceed more fully to describe with reference to the drawing,in which- A is a suitably-constructed box or hopper, at one end of whichis arranged a shaft, B, carrying a cylinder, C, which fits between thesides a a of the box.

Upon the cylinder C, parallel or diagonally to its axis, are arranged aseries of scrapers, b I), having sharp edges, and of a constructiongenerally resembling ordinary tools for scraping wood. These scrapersmay be arranged any desired distance apart, and may be secured in anysuitable manner without affecting the spirit of our invention.

D is a follower, arranged in box A and operated by a hand-screw, asshown.

To separate the fibers of wood, in the manufacture of pulp, rotarymotion is imparted to the shaft B, carrying the scraping-cylinder. Theblock of wood is placed in the box and firmly held and pressed againstthe scrapers, which thus, in effect, are slightly pressed into the wood.The scraping-cylinder, in its rotation, separates and carries away thefiber, the fineness of which is regulated by the pressure upon the woodoperated upon. Suitable provision is made for the reception of the woodfiber or pulp.

WVe are aware that numerous automatic feeding devices have been employedin this class of machines to feed the wood to the stone or scrapers-via,such as feeding-rollers, racks, and pulleys operated by weights, androds operated by spring-ratchets, &c.; but to these We make no claim, asthe fiber can be better regulated as to fineness by the constructionshown and described herein.

Having thus described our invention, we claim and desire to secure byLetters Patent of the United States In a machine for separating thefibers of wood, the combination, with the rotary cylinder C, providedwith the scrapers b b, of the follower D, having the hand-screw,constructed and operating substantially as and for the purposes setforth.

In testimony that we claim the forcgoin g as our own we have heretoaffixed our signatures in presence of two witnesses.

PELEG ROSE. GEORGE CLYMER ROSE;-

i tn esses LUoIUs BROWN, DONALD G. PERKINS.

